ICD-10-CM Code H55

Nystagmus and other irregular eye movements

Version 2021 Non-Billable Code

Not Valid for Submission

H55 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of nystagmus and other irregular eye movements. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:H55
Short Description:Nystagmus and other irregular eye movements
Long Description:Nystagmus and other irregular eye movements

Consider the following ICD-10 codes with a higher level of specificity:

  • H55.0 - Nystagmus
  • H55.00 - Unspecified nystagmus
  • H55.01 - Congenital nystagmus
  • H55.02 - Latent nystagmus
  • H55.03 - Visual deprivation nystagmus
  • H55.04 - Dissociated nystagmus
  • H55.09 - Other forms of nystagmus
  • H55.8 - Other irregular eye movements
  • H55.81 - Deficient saccadic eye movements
  • H55.82 - Deficient smooth pursuit eye movements
  • H55.89 - Other irregular eye movements

Code Classification

  • Diseases of the eye and adnexa (H00–H59)
    • Other disorders of eye and adnexa (H55-H57)
      • Nystagmus and other irregular eye movements (H55)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients


Eye Movement Disorders

When you look at an object, you're using several muscles to move both eyes to focus on it. If you have a problem with the muscles, the eyes don't work properly.

There are many kinds of eye movement disorders. Two common ones are

  • Strabismus - a disorder in which the two eyes don't line up in the same direction. This results in "crossed eyes" or "walleye."
  • Nystagmus - fast, uncontrollable movements of the eyes, sometimes called "dancing eyes"

Some eye movement disorders are present at birth. Others develop over time and may be associated with other problems, such as injuries. Treatments include glasses, patches, eye muscle exercises, and surgery. There is no cure for some kinds of eye movement disorders, such as most kinds of nystagmus.

  • Cranial mononeuropathy III (Medical Encyclopedia)
  • Cranial mononeuropathy VI (Medical Encyclopedia)
  • Eye muscle repair (Medical Encyclopedia)
  • Nystagmus (Medical Encyclopedia)
  • Strabismus (Medical Encyclopedia)
  • Supranuclear ophthalmoplegia (Medical Encyclopedia)

[Learn More]